3ds conductive button pad repair guide?

There are no guides that I know of. I've replaced some of these though. All you have to do is peel the old ones off and align the new ones and stick them on. I usually clean the contacts on the board with alcohol first to be sure they are clean, then it's just a matter of making sure they are aligned correctly.

Usually if these stop working it's because there was some liquid damage so if that's the case be sure to clean the board of all residue before putting the new ones on.

If I get a chance I'll try to make a guide for this.

I hope this helps.